有一投資組合, 其中台積電佔50%, 聯電佔30%, 華邦電佔20%,  若今日收盤時台積電漲2%, 聯電漲1%, 華邦電跌3%,
則投資組合漲跌幅為多少? (請用Excel設公式計算出答案)
Question 2:
Please  refer to the following chart:
(1)  Calculate the percentage of monthly sales growth in 2010 (MoM Change%),
(2)  Draw a line chart with monthly sales growth (%) of each product.
Sales  of consumer electronics in 2010   (units)
	Jan.	Feb.	Mar.	Apr.	May	June	July	Aug.	Sep.	Oct.	Nov.	Dec.
TV	5	5	3	4	2	2	2	4	3	5	5	6
Refrigerator	7	6	7	4	3	4	3	3	1	6	5	6
Washer	10	10	7	9	9	8	7	5	4	5	6	4
Air-conditioner	2	1	4	7	11	11	13	14	12	9	3	2